All balls Racing REAR CALIPER PISTON KIT - 18-9048

Precision machined from high grade 304 Stainless SteelStainless steel reduces thermal conductivity by up to 93% compared to aluminumPlastic composite pistons are prone to damage and become brittle with ageOEM chrome plated steel and aluminum pistons are prone to corrosionEliminates failure prone ceramic inserts found on some KTM modelsEach kit contains piston or pistons to rebuild one caliper